window crank for '68 Craftline Windows

A home owner from Napoleon, Ohio says:
I need to replace a few casement window cranks in my home. Home was built in 1968 with Craftline windows. Do you have any that will work?
User submitted photo of window crank.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Please take a look at our 39-013 Casement Window Operator. Do you think this might work for you?
A home owner from East Lansing, MI says:
I also have the same Craftine 1968 casement window operator as picture in the tread and you suggested 39-013. I was wondering the roller measurement. Mine appears to be 1/2 or 9/16 round. Also the window screw on the left of mine operator and the middle screw in the middle seems to not be there in your suggestion. Will this cause torque problems in opening?
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting! The wheel on our 39-013 Casement Window Operator is also approximately 9/16". As for the center hole, I don't believe it matters too much.
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